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Elucidation of local structures and mechanical properties in secondary battery materials and development of methods to establish design guidelines

Research Project

Project/Area Number 20K05696
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 36020:Energy-related chemistry
Research InstitutionNational Institute of Advanced Industrial Science and Technology

Principal Investigator

Tanaka Shingo  国立研究開発法人産業技術総合研究所, エネルギー・環境領域, 総括研究主幹 (50357448)

Co-Investigator(Kenkyū-buntansha) 多田 幸平  国立研究開発法人産業技術総合研究所, エネルギー・環境領域, 主任研究員 (70805621)
Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2022: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Keywords電池材料 / 構造解析 / 計算科学 / 局所機械的性質 / 第一原理計算 / 二次イオン電池 / Liイオン電池 / Naイオン電池 / 局所エネルギー解析 / 局所応力解析 / 二次電池材料 / 機械的性質
Outline of Research at the Start

Liイオン電池やNaイオン電池のような二次電池の材料に関して、計算科学を駆使してナノ・原子レベルでのミクロスケールの局所構造と局所機械的特性の研究を遂行する。また、研究に必要な解析手法・プログラムの改良・開発を行う。得られた結果を基に、AIによる機械学習・深層学習を活用して構造と特性を「診断」し、新たな材料開発を行う上で必要となる「処方箋」の提供に向けた仕組みを構築していく。

Outline of Final Research Achievements

We have carried out research into the local structure and mechanical properties of materials for secondary batteries such as Li-ion batteries and Na-ion batteries, making full use of computational science. Specifically, we have examined and improved the expansion of units that determine local regions, and performed first-principles calculations and local energy analysis for the negative electrode materials lithium titanate and sodium titanate. We have clarified that the flexibility of oxygen atoms is a major factor in enabling charging and discharging without significant volume change, even in sodium, which has a large ionic radius. Using data obtained from large-scale models that consider the degrees of freedom of Li and Na, we have performed learning using AI and established a scheme for searching for the most stable structure.

Academic Significance and Societal Importance of the Research Achievements

原子・電子レベルでの局所的な構造と機械的性質は、二次電池電極材料の基本特性だけでなく、寿命(サイクル特性)・劣化要因の解明やその解決策を考える上で極めて重要である。将来的には現在主に用いられているリチウム、コバルト、ニッケルといった元素種は、資源制約・循環経済・経済安全保障の観点からその使用に制限がかかることが予想される。そういった環境の中で、省資源化・元素代替を進めるためにはより精緻な材料・システムのデザインが求められるため、新規の材料開発への指針提供を行うツールとしてますますニーズが高まっていくと考えている。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (9 results)

All 2024 2022 2021 2020

All Journal Article (6 results) (of which Peer Reviewed: 5 results,  Open Access: 2 results) Presentation (3 results)

  • [Journal Article] Application of analytical scheme to secondary battery using lithium and/or sodium ion for in-vehicle and stationary use2022

    • Author(s)
      田中 真悟
    • Journal Title

      Oyo Buturi

      Volume: 91 Issue: 1 Pages: 37-41

    • DOI

      10.11470/oubutsu.91.1_37

    • NAID

      130008138628

    • ISSN
      0369-8009, 2188-2290
    • Year and Date
      2022-01-01
    • Related Report
      2021 Research-status Report
  • [Journal Article] Properties of spinel-type Ti?Li?M composite oxides (M = Li, Na, Cu, and Ag) predicted by density functional theory2022

    • Author(s)
      Tada Kohei、Kitta Mitsunori、Tanaka Shingo
    • Journal Title

      Physical Chemistry Chemical Physics

      Volume: 24 Issue: 45 Pages: 28055-28068

    • DOI

      10.1039/d2cp03054c

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] <i>Ab Initio</i> Local-Energy and Local-Stress Calculations for Materials Science and Engineering2021

    • Author(s)
      Kohyama Masanori、Tanaka Shingo、Shiihara Yoshinori
    • Journal Title

      MATERIALS TRANSACTIONS

      Volume: 62 Issue: 1 Pages: 1-15

    • DOI

      10.2320/matertrans.MT-M2020291

    • NAID

      130007960312

    • ISSN
      1345-9678, 1347-5320
    • Year and Date
      2021-01-01
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Synthesis of cubic silver titanium oxide with a spinel-based structure2021

    • Author(s)
      Kitta Mitsunori、Kojima Toshikatsu、Kataoka Riki、Tada Kohei
    • Journal Title

      Journal of Solid State Chemistry

      Volume: 303 Pages: 122514-122514

    • DOI

      10.1016/j.jssc.2021.122514

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Difference in the electron energy loss spectra between the spinel-type Na3LiTi5O12 and Li4Ti5O12 clarified by density functional theory calculations2021

    • Author(s)
      Tada Kohei、Kitta Mitsunori、Tanaka Shingo
    • Journal Title

      Computational Materials Science

      Volume: 188 Pages: 110240-110240

    • DOI

      10.1016/j.commatsci.2020.110240

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] How does the Li-distribution in the 16d sites determine the stability of A3(Li,Ti5)O12 (A = Li and Na)?2020

    • Author(s)
      Tada Kohei、Ozaki Hiroyuki、Kiyobayashi Tetsu、Kitta Mitsunori、Tanaka Shingo
    • Journal Title

      RSC Advances

      Volume: 10 Issue: 55 Pages: 33509-33516

    • DOI

      10.1039/d0ra06125e

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 二次電池材料における局所構造と機械的性質の解明2024

    • Author(s)
      田中真悟、森正弘、多田幸平
    • Organizer
      日本物理学会第78回年次大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 第一原理計算による革新電池フッ化 鉄系正極材料の局所構造の欠陥効果2021

    • Author(s)
      田中 真悟、森 正弘、多田 幸平
    • Organizer
      日本物理学会2021年秋季大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 理論計算に基づくチタン酸スピネル骨格の安定性評価2021

    • Author(s)
      多田 幸平、尾崎 弘幸、清林 哲、橘田 晃宜、田中 真悟
    • Organizer
      第82回応用物理学会秋季学術講演会
    • Related Report
      2021 Research-status Report

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Published: 2020-04-28   Modified: 2025-01-30  

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